No abstract

The histological and histochemical study of the pancreas of the three-toed sloth, Bradypus tridactylus, demonstrated that with the methods employed the pancreatic islets are apparently formed by A cells exclusively. Two different types of argyrophilic cells were noticed in the exocrine secretory units when Grimelius’ method was used. The methods for the demonstration of D cells showed negative results. Aldehyde fuchsin-positive granules were only noticed at the apex of the exocrine pancreatic cells. These results are discussed in relation to current hypotheses concerning the evolution of insulin secretion mechanisms.

No abstract

Discurso proferido pelo Professor Dr. Fernando Aguiar, ex-aluno da Turma de Medicina de 1959, no dia 6 de dezembro de 2019, no Memorial da Medicina de Pernambuco, Prédio da antiga Faculdade de Medicina da Universidade do Recife, atual UFPE, na Solenidade de comemoração dos 60 anos de formatura.